var x = 1;
    function getSupplier( manID ){
        new Ajax.Request("addField.php",
                    {
                    method: 'post',
                    postBody: 'manID='+ manID,
                    });
        }
        function addInput(){
        x++;
            manID = document.getElementById("manID").value
            getSupplier( manID );
            eDIV = document.createElement("div");
            eDIV2 = document.createElement("div");
            eDIV.setAttribute("id","fieldWrapper");
            eDIV2.setAttribute("id","inputDesc");
            eAnchor = document.createElement("input");                          //create the input box
            eAnchor.setAttribute("type", "text");                                           //assign the input box a type
            eAnchor.setAttribute("value", getSupplier.responseText);
            eAnchor.setAttribute("name", "discount" + x);               //asign a reference to the input box
            eDIV.appendChild(eAnchor);                                                          //append the input to the div
            document.getElementById("fields").appendChild(eDIV);        //insert the new div into existing one
}